---You may find the key to the maths problem on page 107 .
---Ah, it’s so simple . I wonder why I of that .
| A．hadn’t thought | B．haven’t thought |
| C．didn’t think | D．wasn’t thinking |
Students are advised to keep the list of books near the desk for easy ________.
| A．preference | B．reference |
| C．purpose | D．function |
In society where social roles are determined, boys usually copy the behavior of their fathers, and girls _______ of their mothers.
| A．that | B．those | C．one | D．the ones |
--Congratulations, Tom! You have won the first prize in the physics competition.
--Don’t _______. I’m not good at physics, you know.
| A．be a wet blanket | B．pull my leg |
| C．have green fingers | D．be all ears |
Peter wasn’t saying anything but his boss smiled at him ______ he had done something very clever.
| A．while | B．even if |
| C．as though | D．though |
--How can you keep slim as a mother of two?
--I have been _______ in the gym for years.
| A．working out | B．carrying out |
| C．getting out | D．giving out |